Halloysite nanotube/quaternary ammonium salt composite antibacterial particle and preparation method and application thereof

A halloysite nanotube, composite antibacterial technology, applied in the directions of botanical equipment and methods, applications, fungicides, etc., can solve problems such as poor anti-bleeding performance, and achieve increased interlayer spacing, increased loading, and good antibacterial activity. Effect

Active Publication Date: 2019-04-16
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Quaternary ammonium antibacterial agents have been reported in the field of bamboo and wood processing, but due to their poor anti-loss performance, they are rarely used as the main antibacterial component, and most of them are used as surfactants in composite protective agents for Improve the compatibility between the ingr

Method used

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  • Halloysite nanotube/quaternary ammonium salt composite antibacterial particle and preparation method and application thereof
  • Halloysite nanotube/quaternary ammonium salt composite antibacterial particle and preparation method and application thereof
  • Halloysite nanotube/quaternary ammonium salt composite antibacterial particle and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Acid etching of halloysite

[0036] Take 5g of halloysite nanotube powder and disperse it in 100mL 3mol / L hydrochloric acid solution, ultrasonically disperse for 30min, place it under 80℃ and magnetically stir for 8h, centrifuge with deionized water until it is neutral, and vacuum dry at 60℃ to obtain Acid etch modified halloysite nanotube powder.

[0037] (2) Activation of acid-etched halloysite nanotubes

[0038] Take the above 5g acid-etched modified halloysite nanotube powder and disperse it in 100mL of 70% dimethyl sulfoxide (DMSO) solution, ultrasonically disperse, stir at 80℃ for 6h, centrifuge with deionized water Washed three times, dried in vacuum at 60°C to obtain activated halloysite nanotubes.

[0039] (3) Load of Didecyl Dimethyl Ammonium Chloride (DDAC)

[0040] Dissolve 10g diddecyldimethylammonium chloride (DDAC) in 100ml deionized water, add 2g activated halloysite nanotubes, ultrasonically disperse, put the mixed solution in a vacuum environment for 30 mi...

Embodiment 2

[0042] (1) Acid etching of halloysite

[0043] Take 5g of halloysite nanotube powder and disperse it in 100mL 3mol / L hydrochloric acid solution, ultrasonically disperse for 30min, place it under 80℃ and magnetically stir for 8h, centrifuge with deionized water until it is neutral, and vacuum dry at 60℃ to obtain Acid etch modified halloysite nanotube powder.

[0044] (2) Activation of acid-etched halloysite nanotubes

[0045] Take the above 5g acid-etched modified halloysite nanotube powder and disperse it in 80mL of 80% dimethyl sulfoxide (DMSO) solution, ultrasonically disperse, stir at 80℃ for 6h, centrifuge with deionized water Washed three times, dried in vacuum at 60°C to obtain activated halloysite nanotubes.

[0046] (3) Load of dodecyl dimethyl benzyl ammonium chloride (BAC)

[0047] Take 10g of dodecyldimethylbenzylammonium chloride (BAC) dissolved in 100ml of deionized water, add 2g of activated halloysite nanotubes, ultrasonically disperse, put the mixed solution in a vacu...

Embodiment 3

[0049] (1) Acid etching of halloysite

[0050] Take 5g halloysite nanotube powder and disperse it in 140mL 3mol / L hydrochloric acid solution, ultrasonically disperse for 30min, place it under 60℃ and magnetically stir for 8h, centrifuge with deionized water until it is neutral, and dry it under vacuum at 60℃ to obtain Acid etch modified halloysite nanotube powder.

[0051] (2) Activation of acid-etched halloysite nanotubes

[0052] Take the above 5g acid-etched modified halloysite nanotube powder and disperse it in 70mL 90% dimethyl sulfoxide (DMSO) solution, ultrasonically disperse, stir at 80℃ for 6h, centrifuge with deionized water Washed three times, dried in vacuum at 60°C to obtain activated halloysite nanotubes.

[0053] (3) Load of Didecyl Dimethyl Ammonium Chloride (DDAC)

[0054] Dissolve 10g diddecyldimethylammonium chloride (DDAC) in 100ml deionized water, add 2g activated halloysite nanotubes, ultrasonically disperse, put the mixed solution in a vacuum environment for 30 ...

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Abstract

The invention relates to halloysite nanotube/quaternary ammonium salt composite antibacterial particles and a preparation method and application thereof. According to the composite antibacterial particles, through acidification and capacity expansion of halloysite, intercalation activation treatment, proper selection of quaternary ammonium salt species and improvement of the loading process, the load of the quaternary ammonium salt in halloysite nanotubes is effectively improved, the anti-loss performance of the quaternary ammonium salt is improved, and the composite antibacterial particles have excellent antimicrobial activity against many kinds of fungi, stain fungi, decaying bacteria and bacteria, and have a wide industrial application range in the field of bamboo wood processing.

Description

Technical field [0001] The invention relates to a nano composite material, in particular to halloysite nano composite antibacterial particles, a preparation method thereof, and use in the field of bamboo and wood processing. Background technique [0002] Quaternary ammonium salt antibacterial agents have broad-spectrum and high-efficiency antibacterial properties, as well as many advantages such as wide application range, good water solubility, stable properties, safety and low toxicity, and low price, making them one of the most widely used antibacterial agents. However, the quaternary ammonium salt antibacterial agent is easily soluble in water, and the antibacterial performance is reduced due to the loss of water during use. Therefore, the quaternary ammonium salt needs to be modified. [0003] Halloysite is a natural inorganic aluminosilicate mineral with a wide range of sources, huge reserves, and low price, which is suitable for industrial applications. Compared with other i...

Claims

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Application Information

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IPC IPC(8): A01N33/12A01N25/08A01P3/00A01P1/00
CPCA01N25/08A01N33/12
Inventor 张融越显峰靳肖贝李志强覃道春费本华江泽慧
Owner INT CENT FOR BAMBOO & RATTAN
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